diff --git a/src/addressbook/libedata-book/e-book-backend-sexp.h b/src/addressbook/libedata-book/e-book-backend-sexp.h
index 42a9d6fb2..9537f2bac 100644
--- a/src/addressbook/libedata-book/e-book-backend-sexp.h
+++ b/src/addressbook/libedata-book/e-book-backend-sexp.h
@@ -54,7 +54,7 @@ typedef struct _EBookBackendSExpClass EBookBackendSExpClass;
 typedef struct _EBookBackendSExpPrivate EBookBackendSExpPrivate;
 
 /**
- * EBookBackendSexp:
+ * EBookBackendSExp:
  *
  * Contains only private data that should be read and manipulated using the
  * functions below.
@@ -66,7 +66,7 @@ struct _EBookBackendSExp {
 };
 
 /**
- * EBookBackendSexpClass:
+ * EBookBackendSExpClass:
  *
  * Class structure for the #EBookBackendSexp class.
  */
